Apparatus for plastering ceilings, walls, and the like



Dec. 6, 1927.

, E. C. CALEY ET AL APPARATUS Fon PLASTERING GEILINGS, WALLS, AND THE LIKE Filed sept. 25,1925 2 sheets-sheet 1 Zczdar Y ,3% emu-ra C@ 26% @zal //7 f 7 E. C. CALEY ET AL APPARATUS Fon PLASTERING CEILNGS, wALLs, AND'T'HE LIKE Filed Sept. 23, 1925 2 Sheets-Sheet 2 n leona/716?. Z

Patented Dec. 6, 1927.

EDWARD conNfaLD-CALEY AND -DEo'NARD cazar", or. BURTON russa, ENGLAND.

arrnparus roRPLAsrrDnINe enigmes, WALLS, AND THE LIKE.-

eineeeen ele'e september 23,519.25; seriel yNef paratuswhich will reduce the manual labour in 'plastering wallsv and' ceilings and for renali eaetrrger. pebbline buldegle- Fer' this purr'ese; we .provide e framework. preerelely ef Steel wheh een be rrleved'lrerls-Y ieri-telly, medina en' ,editable guides .eeeered rethefereulld .er lle'erl j 1F @erariale Gestire .er Wall rleeterra'the frendewerle jieelldde.Se e verfdeel support en Wlleh e .earrier .eferfhe plaster er mertefr fe adapted teelde lend t0 be .Set et .any required verdeel Position: l

A cartridge, eren at @eeh eede filled et the mixing secr' er eebiewieh ehe mastering materiel, leeee l'werd .ferraille elle 'betteln of' the cartridge. The cartridgeis then inserted' in the carrier which is lopen at the top', and the loose hoard, which is then ina vertical position, will form vtheside. of the cartridgex furthest from the wall lto he plzjistered.v The carrier is provided with ineens. preferably, .e reek endl pinion', by which the loose'hoardcan be' forced towards the'wal'l andcause the plastering material to loe extrudedfrom the cartridge into contact with theface ofthe wall;

Rollers carried by thehottom of the framework 'are adaptedto run in guides, which maybe of channel section, and are 'so placed that the open front end of thecartridge car rier is at the required Adistance fr'omthe'wall to apply to the wall the required thickness of plastering material. 4

i The vertical'frames of the framework are ormedjtelescopically in order' to adapt the apparatus forworkingon walls of different heights. l

flat vertical "plate, secured' to and projecting below thecarrier in the same plane as the open endv ofthe carrier nextto the wall, smooths :and `levels off the plaster that has been applied. `1

The carrier is guided, preferably by.

rollers, in its upward and downward movement on the vertical leg ofthe framework and can he raised by any suitable` means,k such as a wire rope, 'secured to the carrier and lpassing overa pulley at the top 'of the framework, land ledthence to a windlass barerel Operated er heed efr; in lere-e instel-lee tioi'as;` ,da Lele'"ctrcal 'orothepoweif 58,1108, nalin Great Britain october 31,1924.

The carrier will descend by its ownv weight, the windlass barrel running freely. Thecarrier is lowered to its lowest position, the charged cartridge introduced, pressure' applied to the hoardl atthe end of the cartridge'in order to force the plastering ma- .terial against the face of the Wall'k andthe carrier is gradually raised to its uppermost position, leaving the required thic'knessfof plaster on ythe wall.v i

The framework is then moved horizontally for a distance approximately equal tothe widthv ot' the' cartridge",l the carriage lowered andthe V,operation repeated, the empty cartridgesbeing replaced by others'previous'ly filled ready for use.

'Fo-rfceiling work an easily det'achable'supplementary framing is provided with rollers running on horizontal guides, as 'described alcove. This supplementary framing is se cured telescopic'fally to frame work of the wall machine, which for this purpose is turned so that the previously vertical'leg carrying the carriage' isy now horizontal and the lengthof the carriage is vertical instead of horizontal.. The carriage is placed at.. one end of the framing and drawnVby` the windlass to thel end of'its stroke.' ',Iheframework is then moved on lits'guide'rails for a distance approximately equalto the width lof the cartridge 'and' the operationV is repeated until the whole length of the ceiling has been covered. It is then necessary to move the guide rails -on thel floor ,to another position, repeating the process untilV 'the whole 'surface of the ceiling'has loeenv covered. The invention is illustrated in the annexed vdrawings in which Fig. 1 is a rear elevation ,of the apparatus; Fig. 2 is a similar side elevation; Fig is an enlarged detail View of the carrier; f

Fig. 4 shows the apparatus turned through 'an `angle of '90O rfoi-'applying plaster to a ceiling.

v In'these drawings', a is the main frame,

' which is mounted on rollers Z), so that it can he moved Vreadily as required, the distance of this frame from the wall c representing the thickness .of plied, rv A 'A tl is thev carrier'p'hich is adaptedy to he aisee-d n a verdeel direction `ia die ary which can in turniholii ijrtic'allj the' layer of plaster tobe ap- A in the main Yl'raine. c `represents a` further trame, which carries pulleys f over which the ropes g, which are adapted to be attat-lied to the carrier d, pass to the windlass la'. The shalt et the `windlass t has a gear wheel t at one end which meshes with a 1.f gear wheel carried by a spindle t. The height of the trames a and c can be varied by means of a rope y" connected to the lower end of' the iframe e and passing over a pulley at the upper portion ot the main traine a and then to a eccomi windlaes j, and are set .in accordance with the height of the wall to to be plastered.

la is a spindle which is driven from the windlass 7i by means et a belt 7, and this spindle carries a brake drum m. and a barrel n. The spindle 7a can be held against niovenientl or allowed to rotate by means of a brake lever which operates a band on the brake drinn en.. One end o a wire rope p has one end attached to the barrel fa, passes over a pulley l0 at the upper end of the secondary traine e, then over a pulley 11 mounted on the lower part ot the carrier d, and has its other end attached to a pulley Q secured to a shaft Q or journalled on the carrier d. A pinion r is also carried by this shaft.

The operation is as itollows: The carrier Z is lowered to the bottom of the trame c and filled with plaster'. The spindle t is `then rotated, causingr the windlass 7L to rotate and the ropes g attached to the carrier d to be wound on the windlass, thus raising the carrier in the frame. The brake lever o is then actuated to cause the brake band to grip the brake drum m and thus to lock the spindle 7a against rotation. The wire rope p attached to the barrel n .is then held. As the carrier continues to rise, the pinion 'r on the shaft Q is rotated by means el" the wire rope p and pulley g and operates a rack S, connected to a foot member i/ which is movable longitudinally in the carrier d and presses against a board va .in said earrier. The movement ot the rack s toward the forward end ot the carrier forces the plaster out et the carrier al on to the surface of the wall, where it is smoothed oli1 by the vertical plate a depending from the forward end oi the carrier, as shown clearly in Fig. l. The'pulleys ll) and ll are so located that pull uponthe rope p serves not only to rotate the pulley y and thus torce the plaster from the carrier (l, but also to press` the open end ot the carrier and the smoothing member a carried thereby toward the 'all to be plastered. llVhen the required height is reached the machine is moved horizontally a distance approximatelyT equal `to the width oit the carrier d. The lever 0 is actuated to release the brake band from the drum fm, the carrier is allowed to descend and the rack s is drawn back to rewind the rope p on the pulley g. `After refilling:r the carrier with plaser, the operation is repeated many times as may be necessary. o represents a stay or support for the lraineworl. i

The carrier l and cartridges are shown more clearly iu Fig. El. The cartridge is merely a box without ends,` a loose board an being fitted loosely within the cartridge.

For filling purposes the cartridge z is turned `intoa vert-ical position, the loose board 'w then 'formingr the bottom. It is then lifted into position in the carrier l by means et handles on the cirtridge and a foot member i/ attached to the rack S then bears against the looseboard w.

llihen the rack s is moved `forward the loose board is pushed Yforward with it so that the plaster is Jforced out of the cartridge and on to the face o't1 the adjacent Wall. It will be seen that the windlass 7L and barrel n are caused by the belt Z to turn in the saine direction. But since the ropes g are wound over the windlass l1, and the rope p is wound under the barrel mithe ropes g and p will move in opposite directions. rlhereilore, when the *windlass 7i, is rotated in a direction to wind the ropes g thereon, and thus move the carrier d upward, the barrel a will be caused to rotate in the direction to unwind the rope p from said harrel, thus permitting the carrier to rise without movementof the loose board 'w therein until the carrier l arrives opposite the point where the plastering operation is to begin. At that time, the brake m is applied to the spindle so as to cause a pull upon the rope p in the further upward movement of thc carrier rl and causing the rope p to unwind from and rotate the pulley (l and moving the loose hoard w toward the open end ot the carrier to deliver the plaster to the wall. When the windlass 7i` is rotated in the opposite direction7 to permit the ropes (7 to unwind thereilrom and thus permit the i carrier d to descend., the rotation ot the windlass 71, will, through the belt Z, rotate the barrel. or drum n in the direction to wind the rope 72 thereon as the carrier is lowered. `When the carrier is in its lowermost position the clutch 7 is released, the rack s is pulled by the handle attached thereto toward the rear end of the carrier d, thus unudndingr the rope p trom the barrel or drum n and windil'ig it upon the pulley g.

Means are provided for adjusting the inclination oi" the apparatus to snit walls that are not perpendicular or ceilings that are not horizontal. Such means is shown in Figure l as comprising a wheel l carried by an adji'istable arm 2 attached to the bottom member a ot the trame by means of a bolt 3 about which it is free to turn. The other and of the arm 2 carries a pin 4 to which is secured an eyebolt extending lll() through an eye carried by the stay or support o. By adjusting Va nut 6V on the eyebolt 5 the arm 2 can be caused topivot about the bolt 3, Vand thus raise or lower the wheel l, with consequent variation of thev inclination of the machine.

In order that the rack may be drawn back readily each time the carrier is lowered, the spindle c is provided with a clutchr of any suitable foiin. This may consistfof a leather Idisc 7 held in contact with the brake drum m by means of a spiral spring 8, release of the disc 7 from the drum m being effected by a hand lever 9. When the clutch is released, the spindle 7c can rotate freely, whereas without the provision of such clutch it would be necessary t0 sliptlie belt Z connecting the spindle la and thev spindle on which is mounted the windlass It. f

In Fig. 4 the machine is shown turned through an angle of 90 so that the carrier can be used to apply plaster to a ceiling.

Having thus described the nature of our said invention andthe best means, we know of carrying the same into practical effect, we claim Y 1. An apparatus for plastering ceilings and walls, comprising a framework, a car-` rier for the plaster movable horizontally and vertically in said framework, means for adjusting said carrier vertically, said carrier comprising an open-ended cartridge and a loose board closing one end of and movable longitudinally of said cartridge, means on said cari'ier operative by the vertical movement of said carrier to move said loose board toward the open end of said carrier, and means including a brake and brake lever for controlling the operation of said last-named means.

2. An apparatus for plasteiing ceilings and walls, comprising a framework, a carrier for the plaster movable horizontally and vertically in said framework, said carrier comprising an open-eiided'cartridge and a, loose board associated with said cartridge, means for adjusting said carrier vertically, and means for horizontally displacing said board in said carrier, said means comprising a rack associated with said loose board, a pinion engaging said rack, and -means engaging said pinion and said framework, and operated by said carrier in its vertical movement torotate said pinion.

3. An apparatus for. plasteriiig walls and ceilings, comprising a carrier for the plaster, supporting meansin which said carrier is movable horizontally and vertically, and means for adjusting said carrier vertically,

'said support comprising vertical telescopic members which do not come into contact with the walls or ceilings to be plastered, one of said telescopic members operating to guide said carrier and the other to'support said carrier.

l, An apparatus for plastering walls and v ceilings, comprising a framework, a carrier for the plaster movable horizontally andl vertically in said framework, and means for varying the inclination of said framework connected to said'carrier for moving said carrier horizontally, means including a windlass for ad'ustin said carrier verticall a shaft driven from said windlass, a drum loose on said shaft and on which said iieXible means is wound, and means for clutchingv said drum' to said shaft.

G. In an apparatus of the character described, a framework, a frame vertically movable in said framework, a carrier for plaster vertically movable in said frame,

said carrier having its` forward end open, means including a pulley mounted on said carrier and operable, when said pulley is rotated in one direction, to eXtrude plaster from said carrier, means including a rotatable 'shaft for moving said carrier vertically in said frame, a second rotatable shaft diivenfroin said first-named shaft, a drum loosely mounted on said second shaft, means for clutching said drum to said second'sliaft,

and flexible means having Vits opposite ends windable on said pulley and said drum, respectively. f

7. An apparatus according to claim 6 wherein the carrier is movable horizontally andwherein a guiding pulley under which the'lleXible means is movable is mounted on the carrier and a second guiding pulley over which the flexible means is movable is mounted on the frame adjacent the upper end of the latter.

8. An apparatus according to claim 6 comprising a brake for securing the drum against rotation during the vertical movement of the carrier.

i In testimony whereof we have signed our names to this specification.

EDI/JARD CORNELL CALEY. LEONARD CALEY. 

